4 406 Strength of Riveted Joints. Example n. — A wrought-iron suspension bridge chain supports 32 tons. Find its cjiniensions and draw the joint to scale. Here (£x'2£) = 16 tons and^=/\/j6~ _ ~ '66x4 = 2'64 di w — i '66 x 4 = 6*64 and the whole is drawn in Fig. 355. t = *2 x 4 = *8 Strength of Riveted Joints. — A boiler plate may be supposed to consist of similar links to the above, but with some redundant material between (see Figs. 356 and 357). The joint *y -+-I l_i illl PH-fiH if H;1? L-.fa^ ! *w Li T J .1 of f I jEr&ruqth/ of- may give way by (i) shearing the rivet, (2) tearing the plate between rivets, (3) cross-breaking at ^, and (4) crushing by reason-of too thin a plate.